Fundamental Strategies for Control of a Tethered System in Elliptical Orbits

Takeichi, Noboru; Natori, M. C.; Okuizumi, Nobukatsu

doi:10.2514/2.3924

Cited by 22 publications

(14 citation statements)

References 10 publications

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“…Therefore, for elliptic orbits, the minimal rotation speed is reduced compared to circular orbits. This finding was also partially supported by a study of Takeuchi, the results of which were published in 2003 [18]. Micrometeoroids and orbital debris (MMOD) hazards play an important role in tether design.…”

Section: The Leo Environment: Drag Momentum Buildup (Aerospinning) supporting

confidence: 71%

“…As tether rotation speed increases, the center of pressure moves up until equilibrium rotation speed is reached with the center of pressure coincident with the center of mass. The unsteady process before reaching the equilibrium rotation speed may include libration and variable-speed rotation (as described by Takeuchi in [18]) and to call this -spin-up‖ is proposed by the author. The role of atmosphere in tether angular movement did not go unnoticed previously.…”

Section: The Leo Environment: Drag Momentum Buildup (Aerospinning) mentioning

confidence: 99%

“…Such periodic forcing may happen due to atmospheric interaction as soon as the tether tip dips into the more dense atmospheric layers. In 2003, Takeuchi [18] stated that although librations of uncontrolled tethers on elliptical orbits are inevitable, with periodic thrust applied on the tether tips, these librations can be suppressed in cases of massless tethers. In addition, Takeuchi [18] found the steady-state rotating tether solution similar to that described in Section 2, but did not quantify it.…”

Section: Introduction: Previous Research On Momentum-transfer Tethersmentioning

confidence: 99%

“…In 2003, Takeuchi [18] stated that although librations of uncontrolled tethers on elliptical orbits are inevitable, with periodic thrust applied on the tether tips, these librations can be suppressed in cases of massless tethers. In addition, Takeuchi [18] found the steady-state rotating tether solution similar to that described in Section 2, but did not quantify it. By a superposition principle, stabilization of a librating massive tether on an elliptical orbit may require a periodic thrust distributed across the length of the tether.…”

Section: Introduction: Previous Research On Momentum-transfer Tethersmentioning

confidence: 99%

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The Space Mission Design Example Using LEO Bolos

Nizhnik¹

2013

Aerospace

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Four sample space launch missions were designed using rotating momentum transfer tethers (bolos) within low Earth orbit and a previously unknown phenomenon of -aerospinning‖ was identified and simulated. The momentum transfer tethers were found to be only marginally more efficient than the use of chemical rocket boosters. Insufficient power density of modern spacecrafts was identified as the principal inhibitory factor for tether usage as a means of launch-assistance, with power densities at least 10 W/kg required for effective bolos operation.

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Section: The Leo Environment: Drag Momentum Buildup (Aerospinning) supporting

confidence: 71%

Section: The Leo Environment: Drag Momentum Buildup (Aerospinning) mentioning

confidence: 99%

Section: Introduction: Previous Research On Momentum-transfer Tethersmentioning

confidence: 99%

Section: Introduction: Previous Research On Momentum-transfer Tethersmentioning

confidence: 99%

See 2 more Smart Citations

The Space Mission Design Example Using LEO Bolos

Nizhnik¹

2013

Aerospace

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“…Active controls toward the periodic solution are also studied. 13) However, mechanical characteristics of the periodic solution have not been clarified.…”

Section: Introductionmentioning

confidence: 99%

Coupled Librational and Orbital Motions of a Large-Scale Spacecraft

Takeichi

Natori

Okuizumi

et al. 2003

Trans. Japan Soc. Aero. S Sci.

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Mechanical characteristics of coupled librational and orbital motions of a large-scale spacecraft are investigated. A rigid body of an arbitrary shape is considered as a mathematical model, and a set of nonlinear equations of motion about the librational and orbital motions is formulated. Through Lindstedt's perturbation method, approximated analytical solutions are obtained. From the analytical solutions, the conditions of instability are clarified, and the characteristics of the orbital motion are shown. The total mechanical energy has the minimum value when the librational and orbital motions coincide with the periodic solution. The formula for the total mechanical energy proves that the periodic solution is the minimum energy solution. From the nonlinear numerical investigations, it is shown that the results stated above are valid even without any approximations. The results of this study provide us the fundamental understandings of the dynamics of large-scale spacecraft in space.

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Stability analysis of in-plane and out-of-plane periodic motions of electrodynamic tether system in inclined elliptic orbit

Kojima

Sugimoto²

2009

Acta Astronautica

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Fundamental Strategies for Control of a Tethered System in Elliptical Orbits

Cited by 22 publications

References 10 publications

The Space Mission Design Example Using LEO Bolos

The Space Mission Design Example Using LEO Bolos

Coupled Librational and Orbital Motions of a Large-Scale Spacecraft

Stability analysis of in-plane and out-of-plane periodic motions of electrodynamic tether system in inclined elliptic orbit

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